Kaposi's sarcoma(KS), also known as multiple idiopathic hemorrhagic sarcoma,mainly involves the skin, and internal organs sometimes. The distribution of KS has been the characteristics of region and ethnic, more common in the Mediterranean and Jewish descent, but Asian rare. KS has been mainly found in the Uyghur population of Xinjiang, but Chinese Han population rare. miRNA is a kind of the non-coding RNA molecules with regulation function, miRNA expression profile differences in some diseases or different ethnic populations. There are some gene expression differences between Uyghur and Han groups. We hypothesized that the level of gene expression and differences of miRNA expression may affect different group's susceptibility to a disease. Therefore, Selecting normal skin tissue of Uyghur and Han groups, classical KS lesions, and peritumoural normal skin tissue of Uighur groups as research materials, using human miRNA chip scanning technology, the project will plan to screen differential expressive miRNA profiling between normal skin tissue, KS lesions, and peritumoural normal skin tissue of Uyghur and Han groups, and to predict and analyse target genes and function of differential miRNA profiling. The project will profit us to elucidate the pathogenesis of KS and provide theoretical proof for the treatment of KS.
Kaposi肉瘤(KS)又称多发性特发性出血性肉瘤,好发于皮肤,可侵袭内脏。KS发生具有明显的地域和种族特点,多见于地中海沿岸、犹太人后裔等,亚洲少见。在中国,新疆KS发病率较高,主要见于维吾尔族人群,罕见于汉族人群。微小RNA(miRNA)是一类具有调控功能的非编码RNA分子,在一些疾病中miRNA表达谱差异在不同民族中也存在差异。维、汉人群属于不同民族,两者之间基因表达存在差异。基因表达水平,甚至miRNA表达的差异,可能会影响对某种疾病的易感性,从而导致KS发生的民族差异性。因此,本项目试图以新疆维、汉人群正常皮肤组织、维族人群经典型KS皮损及皮损旁组织为研究材料,采用人类miNRA芯片扫描技术,筛选正常维、汉人群miRNA差异性表达谱及KS皮损miRNA差异性表达谱,预测并分析差异表达miRNA的靶基因及其功能。本项目研究有助于阐明新疆KS发病机制并为相关治疗提供理论依据。
卡波西肉瘤好发于皮肤,可侵袭淋巴结和内脏。临床上将其分为四型:经典型、艾滋病相关型、非洲型和免疫抑制型。KS发生具有明显的地域和种族特点,多见于地中海沿岸、犹太人后裔等,亚洲少见。在中国,新疆KS发病率较高,主要见于维吾尔族人群,罕见于汉族人群。近年来,在肿瘤l类疾病的发病机制研究中,经常会发现微小RNA(miRNA)的异常,包括表达水平的变化或序列突变等,新发现的miRNA的种类越来越多,大量研究表明,miRNA参与了包括细胞增殖、细胞凋亡、分化与发育以及代谢等许多重要的生物学过程。miRNA是一类具有调控功能的非编码RNA分子,在一些疾病中miRNA表达谱差异在不同民族中也存在差异,因此本项目首先研究卡波西肉瘤miRNA差异表达谱,从发现的170个差异表达中选取miR-126-3p和miR-181b-5p两条差异性明显的miNA进行深入研究分析,主要从miRNA在卡波西肉瘤组织中的表达及对SLK细胞系的增殖、凋亡、迁移、侵袭等生物学功能的影响方面进行研究,并将miRNA发挥作用机制中的重要通路、重要靶点(PIK3R2、VEGFA、STIM1等)进行验证性研究,本项目还首次以裸鼠为载体成功的建立卡波西肉瘤动物模型,为研究卡波西肉瘤的发生、发展过程以及克隆起源、治疗等方面提供扎实的基础。
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数据更新时间:2023-05-31
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